CN104127907A - Non-thermal plasma air-purifying and disinfecting reactor - Google Patents
Non-thermal plasma air-purifying and disinfecting reactor Download PDFInfo
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- CN104127907A CN104127907A CN201410383495.0A CN201410383495A CN104127907A CN 104127907 A CN104127907 A CN 104127907A CN 201410383495 A CN201410383495 A CN 201410383495A CN 104127907 A CN104127907 A CN 104127907A
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Abstract
The invention relates to a non-thermal plasma air-purifying reactor which comprises a housing, a positive electrode, a negative electrode, an external draught fan and a power supply, wherein the positive electrode is arranged between two adjacent negative electrode plates, is in insulating connection with the two adjacent negative electrode plates, and is equipped with an air inlet and an air outlet at the same time, wherein a distance between the positive and the negative electrodes is not smaller than twice a power-generation distance; the positive electrode is fixed on an insulation piece by a positive electrode connection piece; the insulation piece comprises insulation rings; the positive electrode comprises n metal belt groups which are fixed on the positive electrode connection piece, each metal belt group is arranged between two adjacent negative electrode plates, and the metal belt groups are formed by arranging oxidization-resistant metal wires or metal belts at equal distance in the same plane; (n+1) rows of negative electrode plates which are arranged in parallel with the ventilating direction of the reactor are fixed on the reactor housing by negative electrode connecting plates to form the negative electrode; the negative electrode plates are detachably arranged on the negative electrode connecting plates; through holes in which the insulation piece is embedded are formed on the negative electrode connecting plates; and the insulation rings are embedded in the through holes. The non-thermal plasma air-purifying reactor disclosed by the invention greatly improves the purifying effect.
Description
Technical field
The invention belongs to air purifying and sterilizing technical field, be specifically related to Athermal plasma air cleaning reactor.
Background technology
Existing air purifying sterilizer non-thermal plasma reactor used is mainly comprised of anelectrode, negative electrode and shell of reactor.Anelectrode have with filament or metal faciola, have with stainless steel sheet|, do engrail or prong shape is several.
The superiority of Athermal plasma air purifying and sterilizing is also approved by outer increasing personage in the industry, but listing is used still extensive not at present, studies confirm that its reason is that the design of current non-thermal plasma reactor is unreasonable, science not: although the electric discharge anelectrode of non-thermal plasma reactor is selected plasma density that fine wire produces height, be easily blown; For this reason, electric discharge anelectrode selects rustless steel to make zigzag or sharp acicular texture mostly.Although zigzag or prong shape are not easy to be blown, but because their electric discharges are just at place, tip corona discharge, can form discharge current note, discharge inhomogeneous, in darkroom, can see the purplish blue light light beam that has a diameter 0.2mm left and right between anelectrode and negative electrode, this is aerial discharge non-uniform phenomenon.At purplish blue light beam, around plasma density is high, and airborne oxygen and nitrogen are easily activated, and generates the material of the unfavorable factors such as ozone and nitrogen oxide; And it is just very low to leave purplish blue light beam plasma density slightly at a distance, air purifying and sterilizing effect is just poor.Owing to producing the ozone of high concentration and nitrogen oxide, Disinfection Effect is restricted this class reactor, and this is also the more insoluble technical problem of current professional technique.Next is slowly rust of zigzag or prong shape discharge tip place, work reduces greatly less than some months clean-up effect, and this is that radius of curvature becomes large due to the rust at the discharge tip place of anelectrode, and discharge inception voltage uprises, discharge current reduces thereupon, and air disinfection and purification efficiency can reduce certainly.This decay causes plasma density reduction to be not easy to be found by user, so this depurator can cause certain trouble or loss to user.
Applicant finds through prolonged and repeated test and investigation: on market, the high-tension insulant in volts up to ten thousand left and right between plasma reactor positive and negative electrode is generally selected plastics, lucite, epoxy resin etc. now.Desirable insulator is nonconducting, but in fact insulator always has certain, very weak conductive capability.Insulator has the characteristic that stops electric current to pass through, if but while adding high voltage, have the leakage current of a little to inside or the surface of insulator, when voltage surpasses the withstand voltage of insulant, will puncture insulant, at material surface, form conductive carbonized film, so just lost insulation function, and these insulant are directly used for fixing plasma reactor positive and negative electrode wiry as support.
The difficult point that reactor is made is: these insulant compressive resistances are not high, yet during work, suffered voltage all will be more than 6 kilovolts, what have approaches the voltage of 20,000 volts, and every anelectrode is to be all directly connected with these insulant, tinsel is very thin again, the thinner discharge inception voltage of tinsel is lower, just more easily form corona discharge, next is along with the working time increases, the surface of these insulant is with air humidity varies, the accumulation of dust causes electric leakage, climb arc, due to many unfavorable factors, so be easy to form corona discharge at fine wire and insulant contact place, electric current post produces, the ionization of the high energy electron that corona discharge produces to insulant and metallic conduction material molecule, dissociation and melted direct effect, its course of reaction is complicated, product is the oxide of metal etc., time, a little longer tinsel will break.Plasma reactor anelectrode selects fine wire to be easily blown in the past basic reason that Here it is.
Under same high-voltage pulse power source, to zigzag and tip-like, the positive pole of tinsel, metal tape is made the plasma reactor of same specification, insulant used is plastics, and tinsel, metal tape are directly fixed on above insulant, allow its work, do parallel test, observe every day and detect continuously.Discovery work is only about 20 days, and zigzag and tip-like reactor operating current obviously decline; Tip is rust slowly, the in vitro lowering of concentration such as grade producing, this fixing point of the tip of zigzag that Here it is and tip-like anelectrode due to corona discharge the sharpest most advanced and sophisticated part slowly burnt and the not sharp result of rust, about 60 days, just there is fracture of wire in the work of tinsel reactor; It is all in tinsel anelectrode and insulant contact position that tinsel blows place, Here it is because the some generation corona discharge that this contact position is used for tinsel to be fixed on insulant is blown tinsel, and metal tape is disconnected owing to there being the width of 3 millimeter not have, but obviously narrowed down with the metal tape of insulant contact position.Near all reactor anelectrode course of discharges, had and deeply held back the slightly greasy strong material of color; Tinsel, metal tape anelectrode and insulant contact point and near surface thereof also all have Huang to hold back the material of color, this is because tinsel or metal tape are at that contact place corona discharge, and the Huang producing is held back the conductive carbonized film of color substance, at the stainless steel metal wire with insulant contact position, metal tape anelectrode, there is the sign of obvious corrosion.Time is grown a bit and is just blown again.
Above-mentioned plasma reactor test shows, this class reactor is because insulant withstand voltage is not high, prolongation along with the reactor working time, insulant surface has is assembling dust, the foreign material such as moisture, are again that anelectrode tinsel, metal tape are directly fixedly connected on insulant, in boundary, are easy to produce corona discharge, generation current post, the breakdown and conductive carbonized film that forms in insulant surface.The power of effective working area is declined, and reduced plasma density, reactor work efficiency is reduced; Also the structure of reactor is damaged, shortened service life simultaneously.
For example Chinese invention patent application number is 200710038821.4, and denomination of invention < < assembly modular type systyle electrostatic field device > > description homepage just proposes: " the fine rule easily defect of broken string has greatly affected the reliability of installing." in the technical scheme of this invention, propose: a kind of assembly modular type systyle electrostatic field device; comprise discharge electrode (discharge electrode is positive pole), dust collector pole (receive electrode and be negative pole) and insulator; discharge electrode and dust collector pole spaced and parallel are arranged; discharge electrode two ends connect discharge electrode connector; the bottom of discharge electrode is zigzag; the top of discharge electrode is tubulose, zigzag discharge electrode and dust collector pole form dust collection section, dust collector pole two ends connect dust collector pole connector, and discharge electrode connector and receipts electrode connecting parts are connected on insulant.
And for example Chinese invention patent application number is 200810165890.6, and the electrode that the electrode of a denomination of invention < < high-efficient air purification device driven by electric dissociation and circuit > > disclose air cleaner is the technical scheme of tip-like ionization pole.
The reality of " the electric discharge anelectrode that forms reaction of low temperature plasma device selects plasma density that fine wire produces high; be still easily blown " is all considered in above-mentioned two inventions, just helplessly selects the anelectrode of zigzag or prong shape to make plasma reactor.
For another example Chinese invention patent application number is 200610024299.X, in denomination of invention < < ionization type gas purifier > > claims, state clearly: a kind of ionization type gas purifier is individually fixed on insulation board and is formed by the negative electrode of several equal length and anode two ends, form square type electric field; The anode is here pressed ranks form and is arranged, and two ends are vertically fixed on respectively on two insulation boards; Anode adopts the tinsel that corrosion-resistant toughness is strong, and diameter is 0.05～0.2mm, and negative electrode adopts copper or stainless pipe, diameter 8～30cm.
The anode of the ionization type gas purifier of foregoing invention is to adopt the strong tinsel of corrosion-resistant toughness, and the anode is here pressed ranks form and arranged, and two ends are vertically fixed on respectively on two insulation boards.Due to the corona discharge of anode and insulation board contact position, with the impurity on its insulation board surface and conduct electricity and make it breakdown, the anode metal silk some months of only working will be blown.
In prior art: the anelectrode of plasma reactor is selected fine wire, the basic reason being easily blown is that the insulant of not making good use of anelectrode two ends connections is directly connected with insulation board with fine wire.Because fine wire is directly connected with insulation board, because the insulating properties of insulant are bad, insulant decreasing insulating in high-tension situation and micro conductive, thereby that of junction preferential form corona discharge (because of the negative electrode of this junction anelectrode and formation nearest), this attenuates and final fracture with regard to being melted at leisure.So the basic reason being easily blown with fine wire is exactly that to connect the insulant insulating properties of anelectrode bad, fine wire is directly connected with insulation board, at fine wire and insulation board junction generation corona discharge.In reactor use procedure, these insulant surfaces have the existence of impurity, and decreasing insulating under certain high voltage has produced corona discharge, thereby much producers do not find former thereby abandon fine wire and make anelectrode, select zigzag anelectrode or tip-like anelectrode.Slowly rust is understood after using in the tip of zigzag anelectrode or tip-like anelectrode, it is larger that the radius of curvature of anelectrode electric discharge place just becomes, and it is higher that discharge inception voltage becomes, and it is less that discharge current becomes thereupon, air purifying and sterilizing efficiency can be fallen lower certainly, also can cause the problems such as ozone is overproof.
Also some enterprise just abandons plasma reactor, tip-like anelectrode is made to the electronics electrostatic adsorption type purifier of static discharge, and it can only adsorb dust, antibacterial, virus.Almost can not decompose poisonous and hazardous organic compound.
Air purifier is all generally to filter by filtering layer in the market, and activated carbon adsorption purifies air, and its filter element will often change, and within one, two month, will change, and as changed not in time, can cause secondary pollution.Minority with high-pressure electrostatic, carry out sterilizing, can people and machine coexist, it is to process contaminated air with the variation pattern of physics, and airborne pollutant are transferred to (core material is filter course and activated carbon) on the core material in machine, also can cause secondary pollution.With ozone, ultraviolet below 270 nanometers, be kill bacteria virus, can not decompose organic compounds such as removing formaldehyde, and people and machine are incompatible.The single TiO that uses
2photocatalysis purifies air does not almost have effect.But this class depurator is being widely used.
Summary of the invention
The object of the invention is: provide a kind of Athermal plasma air purifying and sterilizing reactor, dependable performance, long working life.
The object of the invention is achieved through the following technical solutions: a kind of Athermal plasma air purifying and sterilizing reactor, comprise the shell of reactor and the negative electrode that the anelectrode consisting of tinsel or metal tape, negative electrode plate form, the power supply of external blower fan and 7～8 kilovolts of direct current pulse power source voltages of generation, anelectrode is arranged between two adjacent negative electrode plates and insulation connects, front end is provided with air inlet, and rear end is provided with air outlet, and the spacing of positive and negative electrode is not less than 2 times of generating distance, wherein
Described anelectrode is fixed on insulating part by anelectrode connector, and described insulating part comprises dead ring;
Described anelectrode comprises the n group metal tape group being fixed on anelectrode connector, each metal tape group is arranged between two adjacent negative electrode plates, described metal tape group is located in same plane and equidistantly rearranges by being no less than the resistance to oxidation tinsel of two or metal tape, and n is natural number;
Described shell of reactor forms negative pole by forward and backward, the upper and lower symmetrically arranged negative electrode brace negative electrode plate that fixedly n+1 row be arranged in parallel along the direction of ventilation of reactor, described negative electrode plate is removably installed on described negative electrode brace, described negative electrode brace is provided with the through hole of inlaying insulating part, and described dead ring is embedded in this through hole.
Anelectrode of the present invention does not directly contact with insulating part, has avoided anelectrode and insulator junction easily to produce corona discharge, generation current post, the breakdown and phenomenons such as conductive carbonized film that form in insulant surface.Thereby extended the service life of reactor.Direct current pulse power source voltage can change, and is generally 6-20KV, and along with the variation of voltage, arcing distance is respective change thereupon also.
On such scheme basis, the invention provides a kind of concrete anelectrode connector, described anelectrode connector at least comprises mutual vertically disposed anelectrode connector A and with the anelectrode connector B of connecting hole, the isometric metal ring for fixing of multistage that described anelectrode connector A is embedded in outside described rustless steel screw rod by rustless steel screw rod and cover forms, and this anelectrode connector A fixes through the through hole of inlaying dead ring and the dead ring of the negative electrode brace of connecting hole to two end of anelectrode connector B; A plurality of anelectrode connector B are embedded in the gap between metal ring for fixing, make adjacent anelectrode connector B equally spaced along direction of ventilation, and metal tape group is fixed on anelectrode connector B.Described rustless steel screw diameter can be for 5mm left and right, by the equally spaced adjacent anelectrode connector B of described aluminum pipe ring for fixing.
On such scheme basis, described dead ring is aluminium oxide ceramics dead ring, this dead ring inner end is provided with the screw hole being connected with anelectrode connector A, outer end is by the inside shutoff of rubber-covered pad, the termination of rustless steel screw rod is fastened in this screw hole, and the termination of at least one section of metal ring for fixing and the inner end of dead ring are supported.The connector A two ends of anelectrode of the present invention are connected on described negative electrode brace by high pressure resistant insulation material; Described high pressure resistant insulation material is to be made by aluminium oxide ceramics dead ring and hard rubber insulation spacer, be embedded in described negative electrode brace for inlaying the through hole of dead ring.Ceramic insulation ring can be 99% aluminium oxide ceramics dead ring.
Because metal tape group is by anelectrode connector B and anelectrode connector A Electricity Federation, lead screw and the dead ring of anelectrode connector A are fixed, this structure can prevent the corona discharge of anelectrode and insulant contact position, simultaneously, preferred insulant also further guarantees dead ring resistance to sparking energy, improves the service life of metal tape group.
On such scheme basis, described anelectrode connector B is by n stainless steel spring sheet and two blocks of thickness 0.5～2.0mm aluminium sheets, or thickness be 0.3～1.5mm corrosion resistant plate by punching press after assembled molectron, metal tape or two ends wiry are connected to form anelectrode networking with the rustless steel shell fragment that goes to upper and lower corresponding setting.The quantity of stainless steel spring sheet is identical with the quantity of metal tape group.The two ends of described anelectrode metal tape group with.
On such scheme basis, described metal ring for fixing is that aluminum pipe ring for fixing and pipe thickness are not less than 1.5mm, is enclosed within outside described rustless steel screw rod.
On such scheme basis, described shell forms with the underframe that is connected respectively front lower, rear lower negative electrode brace by connecting respectively the top cover of front upper, rear upper negative electrode brace, the distance of anelectrode connector and top cover and underframe is than the long 5～8mm of the arcing distance between positive and negative electrode, wherein, arcing distance between described anelectrode metal tape group and negative electrode plate is selected in 8～18mm, and preferably arcing distance is 10mm.Installation method as: as described in anelectrode connector A and more than the installation site of anelectrode connector B will reach 20mm apart from negative electrode plate, and this installation site is than more than the large 5mm of the arcing distance between anelectrode metal tape group and negative electrode plate.Because the compressive resistance of air is 3-4 kilovar/mm, provide the supply voltage of reactor work to be set as 7-8 kilovar, supply voltage has become also respective change of arcing distance.
On such scheme basis, described anelectrode metal tape group is to be made by sludge proof high-resistance electrothermic alloy nickel packfong tinsel or nickel packfong metal material, if the trade mark is CuNi15Zn21, also can make high-resistance electrothermic alloy by nichrome material, every group of anelectrode metal tape group is located in same plane and forms by 16～26mm arranged with interval by being no less than the resistance to oxidation tinsel of two or metal tape, preferred 22mm, wherein, described wire diameter is 0.1～0.3mm, preferably 0.2mm; The width of described metal tape is 0.5～3mm, and thickness is 0.05～0.2mm, and preferred width is 2mm, and thickness is 0.10mm, and the end face of described metal tape is perpendicular to the platen surface setting of negative electrode plate.
On such scheme basis, described negative electrode brace inner side is provided with equidistant groove, four drift angles of build-in rectangle negative electrode plate in groove.
On such scheme basis, described negative electrode plate is to be made by aluminium sheet or corrosion resistant plate.Specifically, if described negative electrode plate is aluminium sheet, thickness is 0.5～2.0mm, surface oxidation treatment; If described negative electrode plate is corrosion resistant plate, its thickness is 0.3～1.5mm.
Compared with prior art, beneficial effect of the present invention is:
(1) the anelectrode metal tape group of the designed Athermal plasma air purifying and sterilizing reactor of the present invention is to be located in same plane and to be made an assembly by equidistant being arranged in parallel by most bar nickel packfong tinsels or nickel packfong metal tape, during air process reactor, just obtained the continuous purified treatment of plasma that the interior most wire of same plane or metal tape produce, rather than the purified treatment of, so greatly improved clean-up effect.
(2) two ends of the anelectrode forming due to most bar nickel zinc white copper wires or nickel packfong metal tape are to be fixed on the rustless steel shell fragment of anelectrode connector B, and anelectrode connector A is vertical with anelectrode connector B is connected to form whole anelectrode networking.Anelectrode connector A two ends are fixed on negative electrode brace by high voltage withstanding ceramic insulation ring, inlay respectively on the groove that is fixed on four negative electrode braces at the place, Si Ge angle, two ends of most piece negative electrode plates, so the whole positive pole of reactor and whole negative pole are all fixed on same negative electrode brace, negative electrode brace is fixed on shell, can say the part as shell, make reactor as in the very convenient depurator that is installed on neatly difformity, different size, different disposal technology of core component.
(3) anelectrode connector B is connected with the anelectrode connector A that quadrature arranges, and only have anelectrode connector A to be connected with negative electrode brace by insulating part, in reactor one end, anelectrode connector A only has two, the positive pole that is to say whole reactor only has four end places to be connected with negative electrode, greatly reduce the junction point of positive and negative electrode, namely greatly reduced contingent corona point.
(4) anelectrode connector B and anelectrode connector A section ratio nickel zinc white copper wire or nickel packfong metal tape are wanted large tens times, so also can not produce corona discharge even if positive and negative electrode contact position insulating part insulation effect is undesirable.
(5) having the insulating part of selecting is 99% aluminium oxide ceramics and the hard rubber that withstand voltage is very high again, their withstand voltage is respectively 8-25 kilovolt/mm and 20-38 kilovolt/mm, than much higher many of the withstand voltage 3-4 kilovolt/mm of air, ceramic insulation ring wall is thick is 2.2mm, minimum range from shell after anelectrode connector A is connected with ceramic insulation ring is 6mm, arcing distance anodal and negative pole is 10mm, so 7-8 kilovolt running voltage will not cause anelectrode to connect the corona discharge of A and insulating part junction.Can not produce any electric discharge phenomena with shell yet.
(6) filament or the metal faciola of making anelectrode metal tape group are to be connected with anelectrode connector A by its large tens times of anelectrode connector B of section ratio, by anelectrode connector A, be connected with ceramic insulation ring again, due to large tens times of anelectrode connector A section ratio filament or metal faciola, its discharge inception voltage is also high doubly a lot of than the discharge inception voltage of filament or metal faciola, so further guaranteed that anelectrode connector A and ceramic insulation ring junction corona discharge can not occur.
(7) negative electrode plate be arranged that formed can aerated area in parallel, this aerated area has larger distance (from vertical dimension from ceramic insulation ring, the distance in ceramic insulation ring Distance Ventilation region is greater than negative electrode plate to the installation site of anelectrode connector A and anelectrode connector B), reduce air to flow through the water that brings and dust etc. and assemble and stain on ceramic insulation ring, namely reduced anelectrode connector A and the pottery corona discharge probability of articulating synapsis absolutely.
(8) anelectrode connector A of the present invention, by the CARBURIZING FURNACE FOR STAINLESS FASTENER of diameter 5mm, adds that internal diameter is greater than the aluminum metal ring for fixing composition of 5mm, and the length of ring for fixing is set by the requirement that reduces the mutual shielding action of same polarity electromagnetic field.Like this can equally spaced adjacent anelectrode connector B, mounting process is simple; Importantly make the mutual shielding action of electromagnetic field between anelectrode that most bar nickel zinc white copper wires or nickel packfong metal tape form be reduced to floor level, make every nickel zinc white copper wire or nickel packfong metal tape in direct current highfield, make stable corona discharge, obtain high concentration plasma.
(9) because anelectrode connector A and negative electrode plate are to be all fixed on negative electrode brace, guarantee that anelectrode metal tape group is placed in adjacent two negative electrode plate middle parts during integral installation like this, make electric discharge evenly; Also make the overall structure of plasma reactor firm, the tinsel of whole anelectrode metal tape group or metal tape are guaranteed constant the same with the arcing distance between negative electrode plate, guarantee every group of anelectrode metal tape group, and even can produce uniform high concentration plasma when every anelectrode tinsel or metal tape work.
(10) metal shell the right and left of the present invention and negative electrode balance portion have negative electrode effect concurrently simultaneously, omit two negative electrode plates, negative electrode brace is also double chlamydate effect simultaneously, makes the overall structure of plasma reactor compacter, simply, obtained extraordinary effect.
(11) the external high direct voltage pulse power of the present invention, the positive pole of DC high-voltage source output terminal and the anelectrode of plasma reactor are made electric connection, and the negative pole of DC high-voltage source output terminal and the negative electrode of plasma reactor are made electric connection; Plasma reactor is arranged between the air inlet and blower fan of air disinfection purifier, by blower fan air blast strengthen distinguished and admirable through reactor to reach desirable pocket sterilizing and purifying effect.The present invention has broad-spectrum sterilization effect: to staphylococcus, escherichia coli, bacillus subtilis, read the viruses such as strain bacterium, mycete and mycoplasma, hepatitis B, influenza in vain and all have efficient eradicative rate.There is dedusting simultaneously, the raw meat of dehematizing, the function of removing the organic exhaust gas such as abnormal flavour, degradation of formaldehyde, smog and TVOC.
(12) safety coefficient requires the anodal high-voltage conducting wires of strict external direct current power supply can be connected to any anelectrode connector A nearby above, the whole electric connections of anelectrode that all nickel zinc white copper wires or nickel packfong metal tape are formed; The cathode conductor coupled reaction device metal shell earthing line of external direct current power supply, has both electromagnetic shielding action, meets EMC Requirements.
Precision of the present invention joins together, just becomes a rational plasma reactor, and has excellent insulating properties; There is good reliability, long working life, generation plasma density high, greatly improved the efficiency of air disinfection and purification.
The present invention has overcome " filament is the technical barrier of broken string easily ", " would rather sacrifice sterilizing and purifying effect, abandon the anelectrode of fine wire and select zigzag discharge electrode or tip-like discharge electrode to exchange the choice of technology of reliability and the working life of disinfection purifier for " terminated.
The present invention mixes suitable DC high-voltage power supply and blower fan, at 100m
3office work 30min, after testing: the killing rate of white, staphylococcus aureus is 99.9%; Total plate count :≤200cfu/m
3; Abnormal flavour clearance:>=96%; Suspended particles number :≤3500/L (Φ>=0.5 μ m); Formaldehyde clearance reaches 99.8%; In air, retain ozone amount≤0.05mg/m
3.Energy-conservation is apparent: 100m
3the indoor health ministry that reaches is about the II of hospital class surrounding air disinfection standard, and the consumed power of the air disinfection purifier that the present invention makes is 7--8W, and reaches the ultraviolet of effect same and the energy consumption of ozone is at least 160W.
To sum up, the present invention has stopped the corona discharge of anelectrode and anelectrode chaining part junction, has stopped the corona discharge of anelectrode connector and insulant contact position.Avoided filament or metal faciola anelectrode to contact with the direct of insulant, thoroughly avoided anelectrode filament or metal faciola owing to directly contacting with insulant, in contact position, produced corona discharge and cause anelectrode tinsel to be blown and shorten working life.Greatly improve the plasma density that reactor produces, also just greatly improved the efficiency of sterilizing and purifying air, good reliability, long working life, and energy-conserving and environment-protective, do not have secondary pollution, is the first-selection of air purifying and sterilizing.
Accompanying drawing explanation
Fig. 1 is plasma reactor configurations schematic diagram of the present invention;
Fig. 2 is plasma reactor axonometric chart of the present invention;
Fig. 3 is that negative electrode of the present invention is set in parallel in the structural representation on rear upper, rear lower negative electrode connecting plate;
Fig. 4 is anelectrode connector B structural representation of the present invention;
Fig. 5 is anelectrode connector A structural representation of the present invention;
Fig. 6 is ceramic insulation ring of the present invention and hard rubber gasket construction schematic diagram;
Fig. 7 is very tinsel or electric discharge work schematic diagram wiry of positive electricity of the present invention;
Fig. 8 is the timing chart of external dc high voltage power supply of the present invention.
Description of symbols in accompanying drawing:
1---anelectrode metal tape group; 2---negative electrode plate;
3---anelectrode connector A;
31---rustless steel screw rod screw;
32---aluminum pipe ring for fixing; 33---with the junction of anelectrode connector B;
4---anelectrode connector B;
41---connecting hole; 42---rustless steel shell fragment;
5---negative electrode brace
501,502,503,504---front upper, front lower, rear upper, rear lower negative electrode brace;
51---screw hole;
53---dead ring; 531---screw hole;
52,54---first, second inlays the through hole of dead ring;
55---hard rubber insulation spacer; 56---for the fixing groove of negative electrode plate;
6---shell of reactor: 61,62---top cover, underframe;
7---air inlet;
8---air outlet;
9---direct current pulse power source.
The specific embodiment
Refer to Figure of description below, the present invention is further described.
If Fig. 1 is structural representation of the present invention, Fig. 2 is axonometric chart of the present invention, Fig. 3 be negative electrode of the present invention be set in parallel in rear on, shown in structural representation on rear lower negative electrode connecting plate, a kind of Athermal plasma air purifying and sterilizing reactor, comprise the shell 6 of reactor and the anelectrode being formed by tinsel or metal tape, the negative electrode that negative electrode plate forms, the power supply 9 of external blower fan and 7～8 kilovolts of direct current pulse power source voltages of generation, anelectrode is arranged between two adjacent negative electrode plates 2 and insulation connects, front end is provided with air inlet 7, rear end is provided with air outlet 8, just, the spacing of negative electrode is not less than 2 times of generating distance, wherein,
Described anelectrode is fixed on insulating part by anelectrode connector, and described insulating part comprises dead ring 53;
Described anelectrode comprises the n group metal tape group 1 being fixed on anelectrode connector, each metal tape group 1 is arranged between two adjacent negative electrode plates 2, metal tape group 1 is located in same plane and equidistantly rearranges by being no less than the resistance to oxidation tinsel of two or metal tape, and n is natural number;
Described shell of reactor 6 is for upper and lower top cover 61 and underframe 62, jointly form negative electrode brace 5 by symmetrically arranged front upper, front lower, rear upper, rear lower negative electrode brace 501,502,503,504() negative electrode plate 2 formation negative poles that fixedly n+1 row be arranged in parallel along the direction of ventilation of reactor, described negative electrode brace 5 is made by aluminium sheet punching press, can be alumina plate.As shown in Figure 3, n+1 row negative electrode plate 2 is removably installed on described rear upper, rear lower negative electrode brace 503,504, as rear upper negative electrode brace 503 is provided with two through holes of inlaying insulating part, for first, second through hole 52,54 of inlaying dead ring, in each through hole, all inlay described dead ring 53.
Described front upper, front lower, rear upper, rear lower negative electrode brace 501,502,503,504 is spirally connected with shell of reactor 6 by being positioned at the screw hole 51 on its four summits.
Described anelectrode connector at least comprises mutual vertically disposed anelectrode connector A3 and with the anelectrode connector B4 of connecting hole 41, the isometric metal ring for fixing 32 of multistage that described anelectrode connector A3 is embedded in outside described rustless steel screw rod 31 by rustless steel screw rod 31 and cover forms, and this anelectrode connector A3 is fixing to the through hole of inlaying dead ring and the dead ring 53 of the negative electrode brace of forward and backward two ends through the connecting hole 41 of anelectrode connector B4; A plurality of anelectrode connector B4 are embedded in the gap 33 between metal ring for fixing 32, make adjacent anelectrode connector B4 equally spaced along direction of ventilation, and metal tape group 1 is fixed on anelectrode connector B4.The present embodiment has three anelectrode connector B that be arranged in parallel.
Described dead ring 53 is aluminium oxide ceramics dead ring, these dead ring 53 inner ends are provided with the screw hole 531 being connected with anelectrode connector A3, outer end is by the inside shutoff of rubber-covered pad 55, the termination of rustless steel screw rod 31 is fastened in this screw hole 531, and (as shown in Figure 6) supported in the inner end of the termination of at least one section of metal ring for fixing 32 and dead ring 53.
As shown in Figure 4, described anelectrode connector B4 is by stainless steel spring sheet 42 and two blocks of thickness 0.5～2.0mm aluminium sheets, or thickness be 0.3～1.5mm corrosion resistant plate by punching press after assembled molectron, described metal tape or two ends wiry are connected to form anelectrode networking with the rustless steel shell fragment that goes to upper and lower corresponding setting.
As shown in Figure 5, described metal ring for fixing 32 is not less than 1.5mm for aluminum pipe ring for fixing and pipe thickness.
Specifically, described anelectrode connector at least comprises anelectrode connector A3 and anelectrode connector B4; Described anelectrode connector A3 forms for the rustless steel screw rod screw 31 by diameter 5mm and cover are embedded in the aluminum pipe ring for fixing 32 that the outer and tube wall of described rustless steel screw rod screw 31 is not less than 1.5mm; Described anelectrode connector B4 is embedded in the gap between described aluminum pipe ring for fixing 32, i.e. in Fig. 5 and junction 33 anelectrode connector B, the equally spaced adjacent described anelectrode connector B4 of described aluminum pipe ring for fixing 32; Described anelectrode connector B4 be by rustless steel shell fragment 42 and 1.5mm aluminium sheet by punching press after assembled molectron; On described anelectrode connector B4, be provided with the connecting hole 41 being connected with described anelectrode connector A3; On described anelectrode connector B4, be provided with rustless steel shell fragment 42; The two ends of described anelectrode metal tape group 1 are connected to form anelectrode group with the rustless steel shell fragment 42 that goes to upper and lower corresponding setting.
The rustless steel shell fragment 42 using in described anelectrode connector B4 is hard shell fragment, is not limited to stainless steel.As shown in Figure 5, the aluminum pipe ring for fixing 32 on the designed anelectrode connector A3 of the present invention, equally spaced anelectrode connector B4, the length of ring for fixing 32 is set by the requirement that reduces the mutual shielding action of same polarity electromagnetic field.Test shows: adjacent two anelectrode distances too small (during this routine < 12mm), because the mutual shielding action of same polarity electromagnetic field causes corona discharge faint; But distance excessive (during this routine > 30mm), takes up room large, can make again plasma density decline.
Anelectrode connector B4, anelectrode connector A3 and ring for fixing 32 are all to be made by aluminum or stainless steel material.Ring for fixing 32 diameter of bores are greater than the external diameter 0.2mm of anelectrode connector A3.
In the present embodiment, described shell 6 forms with the underframe that is connected respectively front lower, rear lower negative electrode brace by connecting respectively the top cover of front upper, rear upper negative electrode brace, the distance of anelectrode connector and top cover and underframe is than the long 5～8mm of the arcing distance between positive and negative electrode, wherein, the arcing distance between described anelectrode metal tape group and negative electrode plate is selected in 8～18mm.
Described anelectrode metal tape group 1 is to be made by sludge proof high-resistance electrothermic alloy nickel packfong tinsel or nichrome material, every group of anelectrode metal tape group 1 is located in same plane and forms by 16～26mm arranged with interval by being no less than the resistance to oxidation tinsel of two or metal tape, wherein, described wire diameter is 0.1～0.3mm; The width of described metal tape is 0.5～3mm, and thickness is 0.05～0.2mm, and the end face of described metal tape is perpendicular to the platen surface setting of negative electrode plate 2.
Described negative electrode brace 5 inner sides are provided with equidistant groove 56, four drift angles of the interior build-in rectangle of groove 56 negative electrode plate 2.
Described anelectrode metal tape group 1, described in each, anelectrode metal tape group 1 is located in same plane and is formed by equidistant being arranged in parallel of 16～26mm by least two resistance to oxidation tinsels or metal tape, preferably by the equidistant composition that is arranged in parallel of 22mm.
On such scheme basis, described anelectrode metal tape group 1 is to make (trade mark is CuNi15Zn21) by sludge proof high-resistance electrothermic alloy nickel packfong tinsel or nickel packfong metal tape, also can make high-resistance electrothermic alloy by nichrome material.Specifically, if described anelectrode metal tape group 1 is tinsel, its diameter is 0.1～0.3mm, and optimum is 0.2mm; If described anelectrode metal tape group 1 is metal tape, its width is 0.5～3mm, thickness is 00.05～0.2mm, the end face of described metal tape is perpendicular to the platen surface setting of negative electrode plate 2, during metal tape discharge loss, its electric discharge end face surface area remains unchanged, and useful working life can reach about 10 years.The preferred width of described metal tape is 2mm, and thickness is 0.10mm.
It is upper that described anelectrode metal tape group 1 is fixed on described anelectrode connector B4, and the connecting hole 41 of described anelectrode group connector B4 connects the described anelectrode group connector A3 of perpendicular setting, and makes electric connection; The connector A3 two ends of described anelectrode are connected on described negative electrode brace 5 by high pressure resistant insulation material.
Thickness and the nickel packfong wire diameter of the nickel packfong tinsel of anelectrode metal tape group 1 or nickel packfong metal tape are similar, but the width of nickel packfong metal tape is the several times of nickel packfong wire diameter.When metal tape anelectrode is made corona discharge in reactor, under the identical state of the caused export license of sputter, its working life also will extend several times.
Be that with anelectrode difference wiry metal tape width is 20 times of left and right wiry, corona discharge causes that sputter causes after export license, and metal tape loss place is because of damaged far away apart from negative electrode, and discharge current reduces naturally; Otherwise the less position of metal tape loss discharge current increases automatically.So, export license, in self regulation state, further extends its working life, obtains beyond thought effect.
Described negative electrode plate 2 is aluminium sheet, and thickness is 0.5～2.0mm, long working life, and outward appearance is beautiful; If described negative electrode plate 2 is corrosion resistant plate, its thickness is 0.3～1.5mm, and structure is lightly firm.If by installation of the present invention, described negative electrode plate 2 is also an assembly, and most block gaps distance equates and parallel placement.Four angles of upper/lower terminal of negative electrode plate 2 be embedded in negative electrode brace 5 for the fixing groove 56 of negative electrode.
Although the negative electrode plate 2 in the present invention also available other metal sheet surface painting nickel chromium triangle substitutes, cost performance is not as aluminium sheet or corrosion resistant plate.The corona discharge electric field of most bar nickel packfongs anelectrode wiry is radially to surrounding, to be uniformly distributed along wiry; The corona discharge electric field of the anelectrode of nickel packfong metal tape is radially to surrounding, to be uniformly distributed along metal tape both sides of the edge; And the anelectrode of zigzag and tip-like while working in reactor only in the electric discharge of top place, discharge electric field is extremely inhomogeneous, top being in darkroom of zigzag and tip-like can see that luminous bright spot is exactly illustration.Select in the present embodiment the reactor of the above-mentioned different structure anelectrode of same volume, just, negative electrode arcing distance is also identical, comprise that the conditions such as power configuration are identical, it is the more than three times of reactor of zigzag or tip-like anelectrode that nickel packfong tinsel or nickel packfong metal tape are made the plasma density that reactor that anelectrode metal tape group 1 makes produces, and the ozone index of measuring is lower than 1/5th of the anelectrode reactor of zigzag or tip-like, meet country about the air ozone amount≤0.16mg/m in < < IAQ (indoor air quality) standard > >
3regulation.
The present invention installs by following installation parameter:
The first, more than the installation site of described anelectrode connector A and anelectrode connector B will reach 20mm apart from negative electrode plate, and than more than the large 5mm of the arcing distance between anelectrode metal tape group and negative electrode plate.
The second, described anelectrode connector A and anelectrode connector B must be away from more than shell 15mm.
The 3rd, with non-thermal plasma reactor, purify the air of a room, because having the meetings and some metal reactions such as the very competent ozone of oxidation in air, so must select sludge proof filament or metal faciola, sludge proof zigzag or sharp needle-like metal to make positive electrode material, must select resistance to oxidation metallic plate as negative electrode.This class non-thermal plasma reactor, fine wire and metal faciola corona discharge are even, and the electromagnetic field density of generation is high, produces non-thermal plasma bulk concentration just high.
Structural design of the present invention need to be followed following principle:
First will choose and make good use of insulant;
The secondth, reduce anelectrode and contact with the direct of insulant;
The 3rd be stop fine wire or thin metal tape directly with the contacting of insulant;
The 4th is the insulant of selecting withstand voltage high, and its breakdown voltage must be much higher than sends out the running voltage of answering device;
The 5th is to need reasonable air flow, makes the air of turnover without anelectrode and insulant contact position, reduces or avoids dust and other impurities to assemble this place;
The 6th is the arcing distance of controlling between anelectrode and negative electrode.Distance too closely can be discharged, generation current post, and distance relation is to safety and the effect of complete machine, according to air compressive resistance and reactor running voltage, if pulse voltage is 6～20KV, arcing distance is generally 6～20mm, and most electronic devices and components, parts can be competent at.
The 7th is anelectrode nickel packfong wire diameter or nickel packfong metal tape thickness and width in the present invention.Anelectrode wire diameter is thinner, and the thinner discharge inception voltage of metal tape is lower, and plasma density is higher; But take into account mechanical strength and working life, nickel packfong wire diameter is that 0.1～0.3mm or nickel packfong metal tape thickness are 0.05～0.2mm for well.
The 8th is the spacing between each anelectrode of design the present invention.According to the arcing distance between anelectrode and negative electrode, determining, is generally the more than two times of arcing distance, if arcing distance is 10mm, the distance between anelectrode and anelectrode should be greater than 20mm.
Fig. 7 is the very electric discharge work schematic diagram of tinsel or metal tape of positive electricity of the present invention, and Fig. 8 is the timing chart of external dc high voltage power supply of the present invention.
The external DC high-voltage power supply 9 of the present invention and blower fan, the anelectrode metal tape group 1 of the positive pole of DC high-voltage source output terminal and plasma reactor is made electric connection, and the negative pole of DC high-voltage power supply 9 outfans and the negative electrode plate 2 of plasma reactor are made electric connection.The high direct voltage pulse power is 7 to 8 kilovolts.Plasma reactor is arranged between the air inlet and blower fan of air disinfection purifier, anelectrode metal tape group 1 and negative electrode plate 2 be arranged in parallel by airflow direction.No matter be not difficult to find out, be tinsel or the metal tape of anelectrode metal tape group 1, all much even than the reactor of zigzag or tip-like anelectrode for negative electrode plate 2 electric discharges.The present invention can make to room air round-the-clock sterilizing and purifying under dynamic situation, to human body and electric equipment without any harm.
Sterilizing mechanisms of the present invention: adopt Bipolar plasmakinetic electrostatic field to electronegative bacterial decomposition and break up, dust is polarized and adsorb, the assemblies such as recombinant medicine immersion-type active carbon, static net, photocatalyst catalytic unit carry out re-pasteurization filtration, the a large amount of Rapid Circulations of treated pure air flow, and make controlled environment remain on " bacteria-and dust-free chamber " standard.
Bactericidal effect of the present invention: sterilization fast thoroughly, reaches 100% in 30 minutes to natural bacteria sterilizing rate, reaches more than 99% in 40 minutes escherichia coli, staphylococcus aureus, Candida albicans.Bacterium≤800/m & the sup3 that swims in 45 minutes air bells laid bacterium≤15 CFU/ ware 30MIN, air starts shooting; Air purity can reach hundred grades more than reaching 300,000 grades (ISO9 grade standard).
In addition, can also decomposing formaldehyde, the poisonous and hazardous organic compound material such as toluene, radon, ammonia, nitric oxide, flue gas, dioxin, TVOC, decompose by being reassembled into the nontoxic inorganic substances such as water, dioxy carbon, oxygen.High energy electromagnetic field in plasma reactor, can adsorb and smash the particulate matter of removing different um particle diameters, removes PM2.5, has extraordinary clean-up effect.
Claims (10)
1. an Athermal plasma air purifying and sterilizing reactor, comprise the shell (6) of reactor and the negative electrode that the anelectrode consisting of tinsel or metal tape, negative electrode plate form, the power supply (9) of external blower fan and 7～8 kilovolts of direct current pulse power source voltages of generation, anelectrode is arranged between two adjacent negative electrode plates (2) and insulation connects, front end is provided with air inlet (7), rear end is provided with air outlet (8), it is characterized in that, the spacing of positive and negative electrode is not less than 2 times of generating distance, wherein
Described anelectrode is fixed on insulating part by anelectrode connector, and described insulating part comprises dead ring (53);
Described anelectrode comprises the n group metal tape group (1) being fixed on anelectrode connector, each metal tape group (1) is arranged between two adjacent negative electrode plates (2), metal tape group (1) is located in same plane and equidistantly rearranges by being no less than the resistance to oxidation tinsel of two or metal tape, and n is natural number;
Described shell of reactor (6) forms negative pole by forward and backward, upper and lower symmetrically arranged negative electrode brace (5) negative electrode plate (2) that fixedly n+1 row be arranged in parallel along the direction of ventilation of reactor, described negative electrode plate (2) is removably installed on described negative electrode brace (5), described negative electrode brace (5) is provided with the through hole of inlaying insulating part, and described dead ring (53) is embedded in this through hole.
2. Athermal plasma air purifying and sterilizing reactor according to claim 1, it is characterized in that, described anelectrode connector at least comprises mutual vertically disposed anelectrode connector A(3) and band connecting hole (41) anelectrode connector B(4), described anelectrode connector A(3) by rustless steel screw rod (31) and cover, being embedded in the outer isometric metal ring for fixing of multistage (32) of described rustless steel screw rod (31) forms, this anelectrode connector A(3) through anelectrode connector B(4) connecting hole (41) to the through hole of inlaying dead ring of the negative electrode brace of two ends fix with dead ring (53), a plurality of anelectrode connector B(4) be embedded in the gap (33) between metal ring for fixing (32), make adjacent anelectrode connector B(4) equally spaced along direction of ventilation, metal tape group (1) is fixed on anelectrode connector B(4) on.
3. Athermal plasma air purifying and sterilizing reactor according to claim 2, it is characterized in that, described dead ring (53) is aluminium oxide ceramics dead ring, this dead ring (53) inner end is provided with and anelectrode connector A(3) screw hole (531) that is connected, outer end is by inwardly shutoff of rubber-covered pad (55), the termination of rustless steel screw rod (31) is fastened in this screw hole (531), and the inner end of the termination of at least one section of metal ring for fixing (32) and dead ring (53) is supported.
4. Athermal plasma air purifying and sterilizing reactor according to claim 2, it is characterized in that, described anelectrode connector B(4) be by stainless steel spring sheet (42) and two blocks of thickness 0.5～2.0mm aluminium sheets, or thickness be 0.3～1.5mm corrosion resistant plate by punching press after assembled molectron, described metal tape or two ends wiry are connected to form anelectrode networking with the rustless steel shell fragment that goes to upper and lower corresponding setting.
5. Athermal plasma air purifying and sterilizing reactor according to claim 1 and 2, is characterized in that,
Described metal ring for fixing (32) is not less than 1.5mm for aluminum pipe ring for fixing and pipe thickness.
6. Athermal plasma air purifying and sterilizing reactor according to claim 1 and 2, it is characterized in that, described shell (6) forms with the underframe that is connected respectively front lower, rear lower negative electrode brace by connecting respectively the top cover of front upper, rear upper negative electrode brace, the distance of anelectrode connector and top cover and underframe is than the long 5～8mm of the arcing distance between positive and negative electrode, wherein, the arcing distance between described anelectrode metal tape group and negative electrode plate is selected in 8～18mm.
7. Athermal plasma air purifying and sterilizing reactor according to claim 1, it is characterized in that, described anelectrode metal tape group (1) is to be made by sludge proof high-resistance electrothermic alloy nickel packfong tinsel or nichrome material, every group of anelectrode metal tape group (1) is located in same plane and forms by 16～26mm arranged with interval by being no less than the resistance to oxidation tinsel of two or metal tape, wherein, described wire diameter is 0.1～0.3mm; The width of described metal tape is 0.5～3mm, and thickness is 0.05～0.2mm, and the end face of described metal tape is perpendicular to the platen surface setting of negative electrode plate (2).
8. Athermal plasma air purifying and sterilizing reactor according to claim 1 and 2, is characterized in that, described negative electrode brace (5) inner side is provided with equidistant groove (56), four drift angles of groove (56) interior build-in rectangle negative electrode plate (2).
9. Athermal plasma air purifying and sterilizing reactor according to claim 1 and 2, it is characterized in that, described anelectrode metal tape group (1), described in each, anelectrode metal tape group (1) is located in same plane and is formed by equidistant being arranged in parallel of 16～26mm by least two resistance to oxidation tinsels or metal tape.
10. Athermal plasma air purifying and sterilizing reactor according to claim 1, is characterized in that, described negative electrode plate is to be made by aluminium sheet or corrosion resistant plate, during for aluminium sheet, thickness is 0.5～2.0mm, and surface oxidation treatment is corrosion resistant plate, and its thickness is 0.3～1.5mm.
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Application publication date: 20141105 |